Submarine boat with steam as driving power



Oct. 14. 1924, 1,511,902

- a JJMUGLER ET AL.-

SUBMARINE ,BOAT WITH STEAM AS DRIVING POWER Filed Dec. 5, 1921 6 Sheets-Sheet 1 I J. MUGLER ET AL IS UBMARINE Bo'ATwmH STEAM AS DRIVING POWER Filed Dec. 5. 1921 e She'ets-Sheet s sU MARmE BOAT WITH STEAM A5 DRIVING POWE -e snag -sheet 4" u Oct. 14 1924..

J. MUGLER ET AL SUBMARINE BOAT WITH STEAM AS DRIVING POWER e sheet-sne'et 5 Filed Dec. 5. 1921 Oct-14} 1924. 1,511,902

' J. MUGLER ET AL SUBMARINE BOAT WI-TH STEAM AS DRIVING POWER Filed 060.- 5. 1921 6 Sheets-Sheet 6 Fig.

' ggzw m Patented Oct. 14, 1924. w I l r r g v I UNITED STATESPATENT.OFFICE.

JULIUS MUGLER, F BERLIN, AND Hermann WoLkE, or BREMEN, GERMANY. SUBMAR-INE BOAT WITH STEAM As nRIvInG POW R.

Application filed December 3, 1921. SerialNo. 519,607.

To all whom it may concern: i of which are diagrammaticviews. In the Be it known that we,JULIUs MUGLER and drawings: 1 I HERMANN VVoLKE, cltizens of Germany, re- Flg; '1 represents a longitudinal vertical siding at Berlin, Germany, and'Bremen, section through a submarine boat embodying 5 Germany, respectively, have invented cerour invention;

tain new and useful Improvements in Sub- Fig. 2 is a horizontal section ofthe vessel; marine Boat with Steam as Driving Power, Fig. 3 is a transverse section in the plane of which the following is a specification. of line III-III of Fig. 1; i

This invention is for a submarine boat, Fig.4; is a plan view of the power unit 7 1 and relates particularly tothe construction arrangement, as shown in'Fig. 2, but on a and disposal of a steam power unit therefor. larger scale;

The higher speeds obtainab-le from steam Fig. 5 isa View generallysimilar to Fig. 60. operated power plants for submarines over 3, but illustratinghigh pressure generators the more common internal combustion eninstead of the low-pressure generators of 15 gine type of power unit is recognized by Fig. 3; p

those skilled in the art. However, consider- Fig. -'6 is a longitudinal section in the able difficulty is encountered in the disp'osiplane of line V-V of Fig. t,'the dotted line tion of the steam generators so as not to representation indicating the removability necessitate 'anincreas'e' in the overall length of the generators fromthe'housings' in which of the craft,or so as not to require addithey are contained; i s "y tional room needed for other purposes. An- Fig. 7 is a transverse vertical section corother'source of difiiculty is the insulation responding to Fig. 3, showinga staggered of heat and the proteotion of the crewfrom' arrangement for" the generators and tur the effects of heat radiating or conducted bine; a 1

25 from the generators. Fig. 8 is a'plan view of the arrangement The present invention has for its principal shown in Fig. 6; I i i objects to provide a power unit in a sub- Figs. 9 and were othertransverse secmarine vessel having a storage capacityfor tions illustrating further modifications, in the conservation of steam for use in undereluding the provision of cooling mean's; and 30 wat r r ising. v Fig. 11 is a plan view of another arrange-j Another important object of the invention ment.

is to provide a novel arrangement of the In the drawings, 5 designates the outer steam generators with respect 'to the conshell of a submarine boat of accepted-design, structionof the boat so as to reduce the in within which is the inner or pressureresist- 35 teriorspace of the vessel occupied by the ing hull 6, the latter being in spaced rela steam generators to a minimum, so that very tion to the former. 1 v little useful space is required for them, with- Intermediate theends of the boat, prefer- 8 out reducing their size to a point where-they ably amidships thereof, are steamjgenerator are inefficient or uneconomical. f q f orboiler' rooms or compartments 7, which 4 Another important object of the invention are between-the inner and outer hulls,"the

is to so'arrange the steam' generators as to rooms projecting laterally from the inner overcome, to a greatextent, the radiation or or pressure resisting hull. It is generallv conduction of heat to adjoining parts of the preferable to so shape the inner hull that radiating surfaces. lOom will bulge' or bow inwardly, as indi- These and other objects and advantages cated at 8, thusoccupying some of the'space vessel, and to'providemeans for cooling heat the .wallalong the inside of the generator are attained by my invention which is'illus-- within the interior of the hull. Ineach trated in the accompanying drawings, all generator room are one or more boilers 7 lhe engines or turbines 9 may be located between the generators, as shown for instance in Figs. 3 and 4, or may be at one end of the generator rooms, as shown in Fig. 11. At least two generators are generally employed, and four are preferable, but they are so disposed as to balance each other, preferably being arranged in pairs, as clearly shown in Fig. 4 of the drawings, one for one side being athwart the cor.- responding one on the otherside.

Where only two generators are used, they may be staggered with relation to each other, the engines or turbines also bemg staggered, as shown in Figs. 8 and 9. This arrangement permits of a communicating aisle 10 from one end of the ship to the other through the boiler and engine rooms. However, in no case do thegenerator rooms extend so far into the .inner hull as to meet and cut 0E communication fore and aft thereof.

WVhere the wall of the steam generator room is close to or common with the pressure resisting hull .6, so that heat would radiate therefrom into the hull, a partition 11 may be placed inside the ship, as shown in Figs. 9 and 10, and air forced up over thehot wall by a ventilator fan M. This air, before being returned to the interior of the vessel, may be cooled by coils N, through which sea water may flow. In Fig. 10 it will be noted that the rooms do not bulge into the inner hull, but are straight, but they do curve outwardly.

Instead of utilizing air -tor cooling purposes, one or more vertically extending cooling passages 12 may be provided, as shown in Fig. 10, so that water may circulate therethrough.

In the event that steam is to be utilized only for surface crusing, the generators may be of a low pressure type and may be flooded when the vessel submerges, thereby not taking up any of the desired space between the two hulls needed for water ballast.

Where, however, steam is to be storechfor under water cruising, special high pressure generators may be employed,as shown in Figs. 5 and 6. In these views, the generators, designated 7 as in the other views, are enclosed in a casing B surrounded by a second shell 14 which is spaced from the inner shell. Spaced outside this shell, is a casing15-tliat may be common,.in part, to the inner hull 6 of the vessel. The space 1 6 7, between shells 14 and 15 is evacuated to provideheat insulation.

The space 17 between shells 13 and 14 is a steam chamber which communicates with the steam generator 7 through apipe 18 in which is a manually operable valve-19. Inasmuch as the steam reservoirs or conservors immediately surround the steam generator, they are kept hot by the excess heat from the generator. To further heat the space, a battle 20 may be placed in the fines 21 for directing the hot gases of combustion through U-shaped tubes 22 disposed in the space 17, and having their opposite ends opening into the flue on opposite sides of the battle. 1

In the event that thespace 17 is not sufficient, and to cruising range, space 17 seeFig. -6, at are end of the generator may be utilized for steam storage.

In operation, where steam is used for underwater. cruising, the steam flows through pipe 18 back into the generators, where it passes through the usual conduits, not.

shown, to the turbines. This simplifies the necessary arrangement of pipes and valves,

and simplifies the operation when making a changeover.

The compartments for the high pressure generators are spaced apart longitudinally,

as shown in Fig. 6. The high pressure generator units may be provided-with removable end plates, so that, when necessary, the generator can be removed from the inner shell when the end plate is removed, and brought into the space between the two generators, as shown in Fig. 7 ior'repairs.

The drawings are to be considered merely as illustrative of the invention, and various details of construction and arrangement,

may be modified within the contemplation of the invention and under the scope of the ap ended claims We claim as our invention:

1. A submarine boat with steam generator compartments formed .on each side of the pressure resisting hullnear the longitudinal center and externally of said pressure resisting hull, and extending laterally therefrom, and means for cooling the wall common to both the compartments and the hull, said means comprising ducts through which a cooling medium is circulated in contact with said wall.

2. A submarine boat having an outer hull and an inner pressure-resisting wall; said boat being laterally expanded near the longitudinal center section to form side steam generator compartments and a central working compartment; said boat having air cooling .ducts between the central and side compartments, through which ducts-cooled air is circulated.

3. A submarine boat inner, hulls, and steam generating rooms disposed substantiallyamidships in the space between the inner and outer hulls, said inner hull being bowed inwardly whereincrease the underwater.

having outer and outer and inner hulls, steam generating rooms between the hulls and disposed athwart each other, said rooms being bowed outwardly into the inner hull, a central passageway in the hull between the bowedout portion of the rooms, and generators in the rooms.

5. A submarine boat having spaced apart outer and inner hulls, two steam generating rooms between the h-ulls at each side of of the ship near the center thereof, one room being spaced forwardly of the other, the corresponding rooms on each side being substantially athwart those on the other side, and steam generators removably carried in each room, the longitudinal space between the two rooms on each side being sufficient to receive one of the generators when removed. 6. A submarine boat having spaced apart outer and inner hulls, two'steam generating rooms between thehulls at each side of I the ship near the center thereof, one room being spaced forwardly of the other, the corresponding rooms on each side being substantially athwar't those on the other side, and steam generators removably carried in each room, the longitudinal space between the two rooms on each side being sufficient to receiveone of the generators when removed, said generator rooms being bowed outwardly into the inner hull and a central passage in the hull between the rooms.

7.7 A submarine boat with an outer and an inner hull, and steam generator compartments at each side of the inner hull and projecting laterally outwardly of said inner hull, said inner hull being bowed inwardly to increase the available size of the compartments.

8. A submarine boat having inner and outer hulls, and boiler rooms extending laterally beyond the inner hull in the space between the two shells, the boiler rooms being outwardly rounded.

In testimony whereof we have aflixed our signatures.

JULIUS MUGLER. HERMAN N WGLKE. 

